Method of making a laminated ribbed insole



June 14, 1960 v. A. SHERBROOK METHOD OF MAKING A LAMINATED RIBBEID INSOLE Original Filed May 8, 1958 INVENTOR VICTOR A. SHERBROOK ATTORNEY United States Patent METHOD OF MAKING A LAMINATED RIBBED INSOLE Victor A. Shel-brook, Mass. (164 Colonel Hunt Drii Abing 3) Original application May 8, 1958, Ser. No. 734,044. gxiiggd and this application Jan. 26, 1959, Ser. No.

This is a division of my prior application Serial No. 734,044, filed May 8, 1958. This invention relates to a new and improved separate tape sewing rib construction and general objects of the invention are similar to those appearing in my United States Patents Nos. 2,713,692 and 2,752,278. The principal improvement in the present case resides in the provision of a sewing rib for an insole which enables the stitching attaching the rib to the insole to be done away with but instead there is provided a new and improved adhesive tape means for accomplishing the same purpose. Stitching may also be used if desired, but the new tape does not depend upon it.

The sewing rib of the present case comprises in general a single length of folded-over tape longitudinally folded over upon itself to form a multi-ply rib, having a lateral longitudinally extending portion to be adhesively secured to the insole at the inside aspect of the upstanding multiply rib; and the particular improvement in the present case includes the provision of a separate inserted elongated longitudinally-extending piece of adhesive tape-like material, such as for instance Scotch-brand tape, plastic, rubber composition, or any other adhesive tapes or materials having strong adhesive qualities and of resilient characteristics, this tape being inserted between the folds of the multi-ply rib above described, and extending outwardly therefrom in contact with the insole and extending in a direction opposite to the above-named laterally extending insole contacting portion of the folded-over tape.

Further objects of the invention include provision of a double fold on the tape rib at the outside edge thereof which acts as a buttress or strong point when strain is applied to the rib in the process of making the shoe. The double fold acts as a pier at the base of the rib, giving the same additional strength at right angles to the direction of the strain imparted in the making of the shoe, and yet at the same time providing for maximum flexibility in a longitudinal direction when the finished shoe is worn upon the foot.

Further objects of the invention include the provision of an adhesively-applied stitchless sewing rib for insoles as above described including an adhesive tape at the outside aspect thereof forming a part of the rib, and the tape which is also adhesively secured at the inside thereof straddles the adhesive tape with two other thicknesses or folds, thus in eifect forming a rib of four plies, this rib being held in upstanding relationship with respect to the insole for the purpose of sewing to the upper in the usual manner.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly set forth in the appended claims.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a plan view of an insole having the new rib attached thereto;

Fig. 2 is a greatly enlarged sectional view through the rib and the insole;

Patented Jun 4, 1960 "ice Fig. 3 is a sectional View illustrating initial folding of the two-part rib;

Fig. 4 is a similar view showing the rib completely folded and ready for application to the insole; and

Fig, 5 is a view s milar 10 Fig. 2 illustrating the same invention applied slightly ,difierently to the insole.

In carrying out the present invention, the sewing rib is shown in Fig. l as generally indicated at 10, this being attached to the insole, indicated generally at 12. It is to be understood that in general the fore-part of the insole will be reduced in thickness in order to provide for greater flexibility and in general theobjects and construction of the presentinvention are similar to those described in my aboveridentified patents.

Referring first toFig. 3, there is shown an elongated substantially endless tape which is generally indicated at 14. This is preferably formed of spoolable tape which may be .of canvas, duck or any similar or suitable material. This tape is folded over upon itself at one edge as clearly shown in Fig- 3 at 16, and this fold may be cemented as indicated at 18, to the surface 20 of the tape 14.

The next-step in the formation of the new sewing rib is to apply to the folded-over portion of tape 14 an adhesive tape or the like which is indicated at 22. This is adhesively Secured as at 24 and itself is provided with an adhesive strip 26 which is formed as a part thereof. The tape 22 is also elongated and spoolable and may be in the nature of Scotch-brand tape, so-called adhesive tapes, masking tapes, plastic, rubber, etc., and may if desired be treated at both sides with adhesive.

The unfolded portion of the tape 14 is then folded twice so that the same appears as in Fig. 4. The tape is folded over approximately to the point 28, and is then reversely folded once more to terminate in the portion thereof which is indicated at 30. This leaves a tape ready to be used which comprises a series of layers here indicated as A, B, C (which is the same as 22), D and E, and these respective identifications are also applied in Figs. 2 and 3.

it will be seen that the tape is applied to the insole by laying it along the required path as in Fig. l and applying either heat or pressure, or both, in order to accomplish the adhesive action of the adhesive tape portion 22 thereof. It will be seen that this adhesive tape portion is firmly cemented between folds B and fold D and it extends outwardly from between these folds in a tail or extending edge portion which is identified at F. The tape as described and as shown in Fig. 4 is rapidly laid down upon the insole along the path as shown in Fig. l, with the bottom surface of the layer E (part of tape 14), cemented flatly to the insole at the inside aspect thereof as respects the rib, see Figs. 2 and 5 at 34.

As the tape is processed, the extending edge portion F of the adhesive tape 22, or D, is secured adhesively to the edge portion of the insole or adjacent thereto, and the fold at 16 is pressed down onto this adhesive tape. This ensures the fact that the fold 16 is brought down snugly onto the tape portion F and assumes the form shown in Fig. 2 which causes the entire sewing rib comprising layers A, B, C and D to pivot away from strip E into upstanding relation preparatory to the sewing operations to follow and which are well known in the art. The rib does not reach a vertical position but rises by itself to the more or less inclined position of Fig. 2 which is sufficient for sewing the upper and the welt thereto. The cover 32 may be applied as usual but is not necessary to the invention, and it is to be noted that this cover has been omitted from the showing of Fig. l in order to expose the portion F of the rib thereof.

The usual canvas or duck has been omit-ted from the drawings and it is as a matter of fact unnecessary as the rib is already standing up and needs no additional reenforcement. The rib does not need any setting up operation and it will be noted that it is 'a very strong rib because it comprises four separate layers of material, A, B, C and D, with the portions F and E holding it in the position desired. The tape may be made as for instance in the Fig. 4 showing or even in the Fig; 3 showing, and then appliedby automatiomachineryfetc.

a The double fold on the tape at the outside edge thereof acts as a buttress and strain is usually applied to the rib in the process of shoe-making, this strain being usually applied in the direction of the arrow in Fig. 2. The double fold at 16 acts as a pier at the base of the rib and gives the rib additionalstrengthJcombatting the strain as indicated by the arrow in Fig. 2, but yet at the same time 7 flexibility in a longitudinal direction of the shoe is maintained as the footbends in wearing the shoe. This action is-partiularly emphasized in Fig. wherein the fold at 16' an edge of an adhesive tape in the area between the doublefold and the single fold and leaving the other edge portion of said adhesive tape extending outwardly from said folds, then applying cement to an extending edge of the single fold and pressure to the extending edge of the adhesive tape fiatly sdowniagainst the insole and thereby adhesively securing .thetwopart ,tape to the insole;

2. The method of making'a ribbed insole comprising the steps of providing an insole and providing a longitudinal tape which is folded alonglongitudinal lines to form three layers, two oi which are secured together and these: two being separated from thethird, inserting'an edge ofan adhesive tape in the area between the double has'been flattened ,by a pressure roll squeezing the fold down against the insole blank and forming a very strong 'base having great resistance to lateral pull or tension as above described. 7

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is: V i 1 1. The method of making a ribbed insole comprising the steps of providing an insole and providing a longitudinal tape which is folded along longitudinal lines to form three layers, two of which are secured together and these two being separated from the third, inserting fold and the single fold and leaving the other edge portion of said adhesive tape' extending outwardly from said folds, providing a pre-cemented extending edge on the single fold and applying :pressure to the extending edge of the adhesive tape flatly down against the insole and thereby adhesively securing the two-part tape to the insole and applying pressure to the folded-over portion of the double fold, causing the same to extend'generally upwardly away from the surface of the insole.

References Cited in thefile of this patent UNITED STATES PATENTS 

